package com.dipacommerce.dipasport.utils.imagezoom;

import android.annotation.TargetApi;
import android.content.Context;
import android.view.MotionEvent;

@TargetApi(5)
public class EclairGestureDetector extends CupcakeGestureDetector {

    private static final int INVALID_POINTER_ID = -1;
    private int mActivePointerId = INVALID_POINTER_ID;
    private int mActivePointerIndex = 0;

    public EclairGestureDetector(Context context) {
        super(context);
    }

    @Override
    float getActiveX(MotionEvent ev) {
        try {
            return ev.getX(mActivePointerIndex);
        } catch (Exception e) {
            return ev.getX();
        }
    }

    @Override
    float getActiveY(MotionEvent ev) {
        try {
            return ev.getY(mActivePointerIndex);
        } catch (Exception e) {
            return ev.getY();
        }
    }

    @Override
    public boolean onTouchEvent(MotionEvent ev) {
        final int action = ev.getAction();
        switch (action & MotionEvent.ACTION_MASK) {
        case MotionEvent.ACTION_DOWN:
            mActivePointerId = ev.getPointerId(0);
            break;
        case MotionEvent.ACTION_CANCEL:
        case MotionEvent.ACTION_UP:
            mActivePointerId = INVALID_POINTER_ID;
            break;
        case MotionEvent.ACTION_POINTER_UP:
            // Ignore deprecation, ACTION_POINTER_ID_MASK and
            // ACTION_POINTER_ID_SHIFT has same value and are deprecated
            // You can have either deprecation or lint target api warning
            final int pointerIndex = Compat.getPointerIndex(ev.getAction());
            final int pointerId = ev.getPointerId(pointerIndex);
            if (pointerId == mActivePointerId) {
                // This was our active pointer going up. Choose a new
                // active pointer and adjust accordingly.
                final int newPointerIndex = pointerIndex == 0 ? 1 : 0;
                mActivePointerId = ev.getPointerId(newPointerIndex);
                mLastTouchX = ev.getX(newPointerIndex);
                mLastTouchY = ev.getY(newPointerIndex);
            }
            break;
        }

        mActivePointerIndex = ev.findPointerIndex(mActivePointerId != INVALID_POINTER_ID ? mActivePointerId : 0);
        return super.onTouchEvent(ev);
    }
}
